Current Context : Recently, strong Western Disturbances brought snow to parts of Himachal Pradesh, Uttarakhand causing changes in weather.

About Western Disturbances

• Extra-tropical storms originating in the Mediterranean region, moving eastward and bringing winter rain to north-western parts of the Indian subcontinent.
• Movement: Carried eastward by westerly winds, particularly the Subtropical Jet Stream.
• Weather Impact: Cause rain, snow, or hailstorms in northern and northwestern India.

Significance for India :

• Agriculture: Crucial for Rabi crops like wheat and mustard.
• Glacier Replenishment: Aid in replenishing glaciers in the Himalayan region.